Many tuners have attempted single turbo setups on the BMW N54 direct injected turbo 6. Up to this point, nobody has been able to come to market with a reliable solution. HPF announced they intended to provide a single turbo kit for the N54 last year. They seem to be progressing further than anyone else and making it into a reality. Expect dyno numbers to come soon but for now the details we have are that this kit will be able to run any Precision T4 Turbo from a 67 to a 76.

Additionally, HPF is aiming for a starting price of $5950 which will include the turbo manifold, journal bearing Precision turbo, wastegate, oil scavenge pump and hardware, downpipe, intake charge pipe, motor mount, motor mount relocation kit, VBrace, fittings, couplers, etc. This will really shift the N54 turbo upgrade options and be incredibly competitive. After this is released expect a Stage II with fueling upgrade but that is further down the line.

It really is not fair to compare the N54 to the S54 kits just because it happens to be a single turbo inline 6 they are doing.

I understand but I guess I meant I'm comparing their quality of their kits and ability lead the development of a platform. At least that's my opinion, I'm pretty impressed with what they've done with the S54, can't wait to see what happens with the N54

Kudos and good luck to HPF. Now that they have started down the road to a big turbo for N54, I think and hope they will follow through with it unlike others.

My concern is drivability and how much the power curve will shift to the right vs stock or RBs. No doubt if they can fuel it the turbo will make a bit more power on pump from a lot better efficiency but time to boost # at a given RPM and max boost at low RPMs (spool threshold) will be interesting to see how much it moved. On my '11 335 I can hit north of 10psi at 1400rpm without completely flooring it (auto). I kinda doubt the HPF will but it should definitely be more fun past 3500!

You know what the turbo is as well as the other turbos that can be used so you can look up specs/compressor maps.

Knowing what turbo it is doesnt tell me much. Pretty obvious you never delt with turbo upgrade uptions.
t4/t4 divided, .84/1.0/1.15/ect AR? What inlet/outlet? There alot of things that go into a turbo besides a general name referring to size/trim.

Knowing what turbo it is doesnt tell me much. Pretty obvious you never delt with turbo upgrade uptions.
t4/t4 divided, .84/1.0/1.15/ect AR? What inlet/outlet? There alot of things that go into a turbo besides a general name referring to size/trim.

So look up all the various options? Or simply ask them for further details? They already told you what turbos work so go ahead and pick your options. Is it really that complicated?

I run an SC, not a turbo. Regardless, there is more than enough info for you there to do your own research.

I'm not claiming to be a turbo expert, you are. Apparently such an expert you can't figure out how to pick your own housing, bearings, etc. Doesn't give me all that much confidence in your expertise when you can't go further from what they already gave you... if you want to talk about looking stupid.